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Introduction to Linux - A Hands on Guide

This guide was created as an overview of the Linux Operating System, geared toward new users as an exploration tour and getting started guide, with exercises at the end of each chapter.
For more advanced trainees it can be a desktop reference, and a collection of the base knowledge needed to proceed with system and network administration. This book contains many real life examples derived from the author's experience as a Linux system and network administrator, trainer and consultant. They hope these examples will help you to get a better understanding of the Linux system and that you feel encouraged to try out things on your own.

/home/maryp/tk8.3.5/unix/tkUnixDraw.c:73: warning: implicit declaration of function `XCopyArea'
/home/maryp/tk8.3.5/unix/tkUnixDraw.c:97: error: void value not ignored as it ought to be

Function 'XCopyArea' uses no prototype defined in the header files and based on source code declaration it is supposed to return a void value. For some reason there is a variable in the source that wants to use the void return value of 'XCopyArea', which is obviously an error.

There are several reasons why tcl/tk 8.4 is better than tcl/tk 8.3.5 - one of the reasons is bugfixing.

If you really need to stick with tcl/tk 8.3.5, then find the problem in the source code and correct it before compilation.